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The Best Sleeping Bag Liners

last updated Dec 12, 2018

When it comes to camping or traveling a sleeping bag is an absolute necessity. It really doesn’t matter where or how you are traveling, but if you plan to stay overnight somewhere, be it in a hotel, hostel, a tent or even under the stars, sleeping bag liners are a much overlooked and an essential piece of gear. Mainly it’s because they are very light, they pack small (small enough to fit in your pocket), they’re easy to use, easy to wash and clean and serve more purposes than you might imagine. Below we have reviewed our top ten picks for the best sleeping bag liners on the market to help you decide which one is best for your travels. On your next journey make sure to keep warm, clean and stay dry with your sleeping bag liner.  

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By Jordan Coleiro:

This list of sleeping bag liners has been put together to show you the best researched and reviewed liners to help keep keep you comfortable and give you that little extra warmth while you sleep during your next camping adventure. A liner to keep your eye on is the Sea To Summit Thermolite Reactor. We love this addition, because it is highly rated, keeps you warm during cold temperatures, can be used as a summer sleeping bag, and made from durable material.

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PictureProduct
Name
Rating
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1
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
95
Use
95%
Versatility
95%
Comfort
95%
Materials
95%
Price Comparison Last Updated (17.12.18)
$57.95
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$67.90
$67.99
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2
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
92
Use
90%
Versatility
94%
Comfort
92%
Materials
92%
Price Comparison Last Updated (17.12.18)
$52.46
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$52.49
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$79.95
$79.95
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3
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
90.3
Use
93%
Versatility
93%
Comfort
90%
Materials
85%
Price Comparison Last Updated (17.12.18)
$19.99
4
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
87.8
Use
89%
Versatility
88%
Comfort
86%
Materials
88%
Price Comparison Last Updated (17.12.18)
$47.95
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$47.99
See Deal
$62.95
5
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
87.5
Use
89%
Versatility
85%
Comfort
86%
Materials
90%
Price Comparison Last Updated (17.12.18)
$21.42
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$26.45
6
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
87
Use
89%
Versatility
88%
Comfort
88%
Materials
83%
Price Comparison Last Updated (17.12.18)
$78.71
7
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
87
Use
89%
Versatility
86%
Comfort
83%
Materials
90%
Price Comparison Last Updated (17.12.18)
$26.45
$32.47
See Deal
8
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
86.8
Use
89%
Versatility
86%
Comfort
86%
Materials
86%
Price Comparison Last Updated (17.12.18)
$39.95
9
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
84.5
Use
86%
Versatility
86%
Comfort
83%
Materials
83%
Price Comparison Last Updated (17.12.18)
$19.99
10
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
84
Use
85%
Versatility
86%
Comfort
83%
Materials
82%
Price Comparison Last Updated (17.12.18)
$26.00
In Depth Review Top 10
  • Sea To Summit Thermolite Reactor Fleece
  • Sea to Summit Silk Stretch
  • Dimples Excel
  • Coolmax Adaptor
  • Alps Mountaineering Mummy Liner
  • Cocoon Silk Rip Stop
  • Alps Mountaineering Rectangle liner
  • Cocoon Egyptian Cotton Liner
  • The Friendly Swede Travel and Camping Sheet
  • Rab Poly-Cotton liner
Table of contents
  • Criteria Used for Evaluation
  • Frequently Asked Questions
  • Sources

Top Ten Sleeping Bag Liners

1. Sea To Summit Thermolite Reactor Fleece

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
95
Sea To Summit Thermolite Reactor Fleece
Use
95
Versatility
95
Comfort
95
Materials
95
best offer for today
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$67.90
$57.95
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$67.99
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Pros:

Great from winter to increase sleeping bag warmth

Can be used as a summer sleeping bag on its own

Cons:

Bulky compared to others

This particular Thermolite Fleece Liner is the warmest of the Reactor bags made by this company. It's major strength that has been attested to by reviewers is that it makes a sleeping bag warmer, or it can even be used alone for a cooler sleep.

The Thermolite Fleece is going to provide a toasty warm sleep, and it's fabric has a brushed finish for extra comfort.

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Primary Material: Microfleece

Rectangular or Mummy: Mummy

Added Temperature: Approx +8oC

Adequate Breathability: Yes

Moisture Wicking Properties: Not stated

Available Colors: Black

Extra Long Size Available: No

2. Sea to Summit Silk Stretch

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
92
Sea to Summit Silk Stretch
Use
90
Versatility
94
Comfort
92
Materials
92
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$79.95
$52.46
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$52.49
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Pros:

Improves the warmth of your sleeping bag whilst reducing clammy skin

Good as a sleeping bag in hot and humid climates

Very lightweight

Cons:

Not ideal for winter

Sea To Summit makes their traveling sheets from strong, yet comfortable ripstop silk, and they have added Polyester and Lycra stretch panels along the seams. The reason for this addition of materials is that the stretch panels help the liner to move with your body while you roll or nestle up for the night's sleep.

The seams are reinforced and the bag is totally machine washable, so it's functional, durable, and long-lasting.

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Material: Silk

Rectangular or Mummy: Both

Added Temperature: +5oC

Breathable: Yes

Moisture wicking: Somewhat

Colors: Navy, Berry, Pacific and eucalyptus

Extra long size available: No

3. Dimples Excel

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
90.3
Dimples Excel
Use
93
Versatility
93
Comfort
90
Materials
85
best offer for today
$19.99
Pros:

Generous sizing

Money back guarentee

Convenient entrance

Cons:

Tends to be a little slippery

The Dimple Excel excels in a couple of areas. First of all, any green buyers out there will enjoy the fact that this liner is made from polyester that utilizes features such as organic and natural dyes and recycled materials.

This liner is also very lightweight, comfortable, and offers adequate breathability.

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Material: Satin

Rectangular or Mummy: Rectangular

Adequate Breathability: Yes

Moisture Wicking Properties: Somewhat

Available Colours: Monaco Blue or Silver Gray

Extra Long Size Available: No

4. Coolmax Adaptor

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
87.8
Coolmax Adaptor
Use
89
Versatility
88
Comfort
86
Materials
88
best offer for today
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$62.95
$47.95
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$47.99
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Pros:

Improves the warmth of your sleeping bag whilst reducing clammy skin

Good as a sleeping bag in hot and humid climates

Very lightweight

Packs very small

Cons:

Not designed for winter

Sea to Summit's Coolmax Adaptor liner has been updated with a more convenient and comfortable shape that conforms to a sleeping bag well. The 'traveler's' shape is only one addition of this bag, it also comes with a pillow insert.

You may be wondering, "What exactly does Coolmax mean?" Good question. It is a fabric that has been proven to effectively manage moisture, and it adapts to a variety of temperatures and levels of humidity. Even in the balmiest, wet weather, the Adaptor, well, it adapts to provide you with a comfortable night’s sleep.

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Material: Coolmax Synthetic

Rectangular or Mummy: Tapered Rectangle

Added Temperature: +4-5oC

Breathable: Yes

Moisture wicking: Yes

Colors: Blue

Extra long size available: No

5. Alps Mountaineering Mummy Liner

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
87.5
Alps Mountaineering Mummy Liner
Use
89
Versatility
85
Comfort
86
Materials
90
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$26.45
$21.42
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Pros:

Usable on its own in summer

Will increase warmth some

Adds comfort

Cons:

Some find it a bit thicker than many others out there

The Alps Mountaineering Mummy Liner is made from microfiber that is warm, soft, and durable. The strength of this liner is that it offers those seeking a bit of extra comfort and warmth in colder climates a simple solution. It's nice, too, because it will protect an expensive sleeping bag from skin contact that can eventually wear it down.

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Material: Polyester fleece

Rectangular or Mummy: Rectangle

Added Temperature: +6oC

Breathability: Minimal

Moisture Wicking Properties: No

Available Colors: Charcoal

Extra long size available: No

6. Cocoon Silk Rip Stop

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
87
Cocoon Silk Rip Stop
Use
89
Versatility
88
Comfort
88
Materials
83
best offer for today
$78.71
Pros:

Improves the warmth of your sleeping bag whilst reducing clammy skin

Good as a sleeping bag in hot and humid climates

Very lightweight

Cons:

Not an ideal choice for low temps

Silk is great for so many reasons when it comes to a sleeping bag insert. One major factor of silk's benefits is that it is light and minimizes weight and bulk for the traveler. Silk is also super soft for your skin, and it adapts well to temperature changes. For example, it feels cool in the summer, yet it is warm in the winter.

This fabric also allows for either hand or machine washing to offer further convenience for a camper. This particular bag is Woven with a structure of strong silk threads, and the Ripstop Silk is stronger and more durable, so that it resists tears, and will last longer.

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Material: Ripstop Silk

Rectangular or Mummy: Both

Added Temperature: +5.3oC

Breathable: yes

Moisture wicking: Somewhat

Colours: Purple/Tuareg

Extra long size available: No

7. Alps Mountaineering Rectangle liner

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
87
Alps Mountaineering Rectangle liner
Use
89
Versatility
86
Comfort
83
Materials
90
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$26.45
$32.47
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Pros:

Packs down tight

Will add noticeable warmth

Easy to wash

Cons:

Not meant for extreme weather conditions

The Alps Mountaineering Rectangle Liner is made from a high quality poly-cotton that allows breathability, but will still keep you warmer combined with the use of your rectangular sleeping bag. Like many of the liners on this list, this one also comes with a stuff bag for convenient storage and packing.

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Material: Microfibre or Poly Cotton

Rectangular or Mummy: Both

Added Temperature: +3oC to 5oC

Adequate Breathability: Somewhat

Moisture Wicking Properties: Somewhat

Available Colors Grey

Extra long size available: No

8. Cocoon Egyptian Cotton Liner

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
86.8
Cocoon Egyptian Cotton Liner
Use
89
Versatility
86
Comfort
86
Materials
86
best offer for today
$39.95
Pros:

Good as a sleeping bag in hotter climates

Very lightweight

Cons:

Not a great choice for extreme environments

The Cocoon Egyptian Cotton Liner is a fantastic lightweight and roomy option for travelers looking for a natural fabric. These sheets are great for a rectangle shaped sleeping bag, and because they are cotton, they work well for warmer situations, because the cotton breathes well.

Egyptian cotton is a long fibered cotton that has been spun into a fine yarn, and this results in a soft, lightweight, and durable fabric. The Egyptian cotton tends to be lighter and more compact than liners made of regular cotton. This particular bag is a nice compromise between a bag made of silk or regular cotton, so if you are indecisive on fabric, it's a great place to start.

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Material: Egyptian Cotton

Rectangular or Mummy: Both

Added Temperature: +3.9oC

Breathable: Yes

Moisture wicking: Somewhat

Colours: Laguna Blue, Natural, Khaki, Tuareg

Extra long size available: No

9. The Friendly Swede Travel and Camping Sheet

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
84.5
The Friendly Swede Travel and Camping Sheet
Use
86
Versatility
86
Comfort
83
Materials
83
best offer for today
$19.99
Pros:

Comfortable

Great for taller or bigger people

Spacious 

Lightweight

Cons:

If you don't want synthetic fabric, this isn't the bag for you

This sleeping bag offers dual colors to choose from, which is a nice option for those who want a darker or lighter color. And the sizing of this liner is fairly generous compared to other bags, so it offers a lot of space for you to stretch without feeling constricted at all.

This bag comes with a life-time warranty, which tends to offer a buyer peace of mind. Not to mention, it is completely machine washable, and at the end of the day, it will keep you protected from a hostel's questionable sheets.

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Material: Polyester

Rectangular or Mummy: Rectangular

Adequate Breathability: Yes

Moisture Wicking Properties: Somewhat

Available Colours: Blue and white

Extra Long Size Available: No

10. Rab Poly-Cotton liner

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
84
Rab Poly-Cotton liner
Use
85
Versatility
86
Comfort
83
Materials
82
best offer for today
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$26.00
Pros:

Increases the warmth, extending the use of your sleeping bag through lower temps

Okay as a stand-alone summer bag

Easily packs into its own stuff sack

Cons:

Will not increase warmth enough to make an intermediate bag suitable for extreme cold

This liner is a refreshing, no-muss, no-fuss type of liner that will have your sleeping bag protected or you safely covered from a hostel's not-so-great sheets.

It's a simple design with a straightforward opening, and it's made from cotton, but there is also a silk version available. While this liner doesn't come with any bells or whistles, it will do the trick of protecting you and your bag at a reasonable cost.

Read more

Material: Polyester Cotton mix

Rectangular or Mummy: Both

Added Temperature: +3oC

Breathablility: Minimal

Moisture Wicking Properties: Minimal

Available Colours: White

Extra Long Size Available: Yes

Criteria Used for Evaluation

Use

Why would you want to take your own travel sheets? Maybe the hostel you are staying in is not exactly 5 star and the sheets provided are not very nice, and who knows who slept on them last and when they were last laundered, or maybe your hotel got the booking wrong, or one of a thousand possible ways of you having to stay in the budget hotel down the street. If you have a sleeping bag liner with you at least you know that you can sleep inside something clean and bug-free. And it will not take up any space or any realistic weight in your luggage.

The more traditional use is as a liner for inside your sleeping bag. A good quality sleeping bag is an investment that you spend a tidy sum of money on, and it’s not the easiest of items to clean. I’m sure that your sleeping bag is very clean, and there are no strange smells when you unroll it, definitely no crumbs from midnight snacks, no squashed insect or spiders you rolled on in the night. But unless you have cleaned it after every expedition and trip then it will have a build up of body oils, bits of dead skin and hair. Basically the perfect environment for bed bugs. Most washing machines are either not big enough to hold a sleeping bag and if they are washing a sleeping bag will fill the whole machine, whereas a sleeping bag liner can be washed along with the other day to day laundry items. Much more efficient for you and the environment.

Versatility

Still not sold on the idea, want a warmer sleeping bag, a bag liner can add 4oC to 8oC of warmth to your sleeping bag, depending on the material used in the liner (more on materials later). Or is it the middle of July or August and a humid +20oC, you don’t want to be in your sleeping bag, but laying outside you are about to become an all you can eat mosquito buffet. Your sleeping bag liners have just become an ultra lightweight summer sleeping bag and depending on the fabric, breathable or with added insect repellent.

Comfort

You need to decide on the time of year you will be using the liner. Are you only going to be using it during the spring and summer, in which case a lightweight breathable material is good, or will you be using it in the winter and therefore need it to give the maximum increase in sleeping bag temperature and a fleece fabric might be better. The weight of the fabric may be a concern for you, as well as how small it can be packed, especially if you are going to be backpacking, however, if you camp from the car then the size and weight are probably not and issue.

What is important is that you know the size of your current sleeping bag. If you buy a liner that is larger than your current sleeping bag then you will experience folds in the liner fabric, these can be uncomfortable, but mainly it enables the liner to cling to you and as you turn over in the night the liner will slowly wrap itself around you and constrict you, like a loving Boa constrictor. Is your sleeping bag rectangular or a mummy bag? If it is a mummy bag do you want your liner to have a hood or is the hood of the mummy enough? With rectangular bags do you want a pillow pocket to insert a pillow, Is a side zip important for ease of access?

Materials

What material or fabrics should I look for? This one really depends on your personal preference, but should also be chosen based on the most likely type and frequency of use.

Silk
Silk is a natural fabric woven from the cocoon of silk worms. It is very lightweight and feels luxurious next to the skin. Silk offers excellent insulation properties, due to its low conductivity. But it is absorbent and will soak up moisture (moisture wicking) and allow this moisture to evaporate, which makes it great in hot and humid climates, as well as cooler climates. Silk is relatively strong but will loose a lot of its strength when wet so care needs to be taken when washing the material. Because of the manufacturing process to obtain silk, the cost of this fabric and items made from it are generally higher than other fabrics.

Silk-Cotton Blend
As the name suggest is a silk and cotton blended fabric. The main idea is to reap the benefits of both fabrics. Silk cotton blends often have the same silky feel as pure silk and the increased strength. However, the insulation properties are lower than pure silk. In hot and humid climates Silk Cotton blends still offer good absorption and moisture wicking, enabling the wearer to remain cool through the breathability of the fabric.

Cotton and Egyptian cotton
Cotton liners are probably the most common. Cotton is a cost effective fabric and a lot less expensive compared to silk. Cotton is great in hot humid climates and allows breathability and absorption and moisture wicking, but in terms of insulation, cotton is a long way behind silk. Cotton liners are also heavier and do not pack as small as a silk product. Cotton does not insulate as well as silks, although the higher the thread count the better the insulation will be.

Egyptian cotton is not necessarily from Egypt but nowadays refers to the quality of the cotton thread. Egyptian cotton is a different plant than standard cotton and this along with the fact that Egyptian cotton is hand picked changes its properties compare to standard cotton. Egyptian cotton has longer and finer strands or threads meaning that 1 square centimeter will contain more threads and as such feel finer on the skin and be more flexible and stronger. Egyptian cotton is slightly more porous than standard cotton and as such means, it is slightly more breathable than standard cotton. Expect to pay a premium for Egyptian cotton. It is worth comparing the thread count of the fabric if such information is available, this will give you an idea on the quality of the cotton. The high the tread count per cm square the better the cotton.

Synthetics
Man made fabrics designed for a specific purpose. Some are excellent moisture wickers and breathable, such as CoolMax, others designed for excellent insulation as Thermolite fabrics are. The advantage of these is they are generally strong and easy to wash and clean. They will certainly do what they are designed for whether that is insulated or be breathable. It is worth considering these and checks if they are stretchable. Being stretchable will mean less chance of you becoming wrapped up tight because you toss and turn a lot in your sleep.

Wool Liners
Wool liners and Merino wool liners are excellent insulators, and in the case of Merino wool feel nice next to the skin. The main disadvantage is the size and weight of these.

Treated fabrics
Some liners come with special treatments and coating, such as an insect repellent treatments which is useful if you are using the liner as a summer sleeping bag.

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Keep it Light

Remember when looking for a sleeping bag liner, that if you are backpacking this will be some extra weight on your pack. So keep that in mind and try to find a sleeping bag liner that is light in weight, so you can have a comfortable sleep with no extra strain on your back.

Frequently Asked Questions

q: Why are sleeping bag liners important?
a:

Sleeping bag liners are one of the most undervalued items when camping but most important as they add valuable degrees of warmth to keeping all of the bugs away. They are lightweight and very easy to pack for long hikes or portaging with a kayak even. They play a large role when keeping you clean from the dirt on the ground to adding an easily washable barrier between you and your sleeping bag.

q: Where is the most reliable place to purchase a sleeping bag liner?
a:

Sleeping bag liners are sold on adventure websites, amazon to stores such as Sail, Atmosphere to Bass Pro Shop or any camping store. They are very light so low cost on shipping fees and are very reasonably priced for their advantages they help with.

q: What is the best material to purchase a sleeping bag liner in?
a:

There are many different materials such as cotton, Egyptian cotton, wool or silk sleeping bag liners. Really the best one that suits you and your adventure such as wool would keep you warm, Egyptian cotton is very light and good for a summer night as well as silk. There tends to be a preference to be for Egyptian cotton which is a stronger, more reliable material helping you sleep tight at night.

q: Can you replace your sleeping bag with a sleeping bag liner?
a:

Absolutely, if you are traveling to countries or places where it is very humid or hot a sleeping bag may not be needed, but just like a sleeping bag liner you can use it as a bed sheet or alternate sleeping bag itself. Lighter on your skin and still soft to help you from sleeping against a mattress to keep yourself clean.

q: What is the weight of an average sleeping bag liner?
a:

Below is the weight and temperature for each material that sleeping bag liners come in. The average seems to be around 250-400 g.

The table below gives you a guide on the added temperature and approximate weight of sleeping bag liners made out of the listed materials. The table lists the material, the added tempature, and the weight.

Silk +5.3 °C 160 g
Silk-Cotton +4.8°C 220 g
Egyptian Cotton +3.9°C 260 g
Microfiber +3.0 °C 290 g
CoolMax +4.7°C 305 g
Thermolite Silk weight +6.3 °C 195 g
Dual Liner +6.5°C 355 g
Thermolite Performer +7.0°C 340 g
Thermolite Radiator +9.0 °C 460 g
Cotton +2.9 °C 410 g
Organic Cotton +2.9°C 460 g
Cotton Flannel +6.7°C 530 g
Merino Wool +7.0°C 600 g
Micro fleece Lightweight +6.2 °C –
Micro fleece Medium weight +8.0 °C 910 g

Sources

  1. Kimberly Duugan , WHY USE A SLEEPING BAG LINER, Oct 09, 2018